Porous Materials for Gas Sorption and Separation Applications

Dave Madden

Research Fellow at University of Limerick talks about his work with Glantreo’s porous materials for Gas Sorption and Separation.

Glantreo Products used: Mesoporous MCM-41, SBA-15, XP-100, Stöber Silica Particles

The development of the next generation of porous materials is key to enabling the “age of gas”, wherein new technologies develop around the storage and separation of gases[1]. Industrially, removal of CO2 is important in multiple chemical purifications including flue gas (0.15 bar CO2) and natural gas (NG) processing (0.5 bar CO2). Industrial specifications require CO2 concentrations in natural gas (NG) of below 50 ppm before liquefaction because of corrosion and CO2 freezing at -161 °C[2]. The diversity of CO2 concentrations and gas mixtures creates a challenge in addressing trace CO2 capture via a single solution.

Current commercial CO2 capture systems, using primary and secondary alkyl amine scrubbers, can capture a few hundred tonnes of CO2 per day[3]. However, they are the most expensive aspect of an overall capture, transport and sequestration system and are limited by high regeneration energy, large equipment size, amine degradation and equipment corrosion[4]. CO2 capture using solid adsorbents has long been recognised as an energy efficient alternative to traditional processes; however, no suitable candidates have yet been reported in terms of selectivity and performance in the presence of moisture[5].